Preliminary evaluation of purified lignin and hemicellulose as prebiotics candidates for Atlantic Salmon, Salmo salar L. Issue 3 (3rd July 2018)

• Record Type: Journal Article
• Authors: Yossa, Rodrigue; Levesque, Sylvie; Groman, David B.; Lora, Jairo H.
• Is Part Of: Journal of applied aquaculture. Volume 30:Issue 3(2018)
• Page Start: 256
• Page End: 271
• Publication Date: 2018-07-03
• Subjects: Atlantic salmon -- hemicellulose -- fishmeal -- lignin -- nutrition -- prebiotics; Aquaculture -- Periodicals; Fish culture -- Periodicals; 639.8
• DOI: 10.1080/10454438.2018.1439795
• Languages: English
• ISSNs: 1045-4438

Abstract

ABSTRACT: A study was conducted to investigate the potential of purified lignin and hemicellulose as prebiotics in diets for Atlantic salmon, Salmo salar L., postsmolt in seawater (30 ppt) at 14.9 ± 1.2°C. Triplicate groups of fish (initial individual body mass of 101.6 ± 1.2 g) were fed either the fishmeal-dense (32% of fishmeal) control diet (A) or one of the nine diets (15% fishmeal) supplemented with lignin:hemicellulose ratios (% diet:% diet) of 0.05:0 (B), 0.25:0 (C), 0.50:0 (D), 1.00:0 (E), 0:0.05 (F), 0:0.25 (G), 0:0.50 (H), 0.05:0.25 (I), and 0.25:0.50 (J) for 12 weeks in a complete randomized experimental design. At the end of the experiment, the thermal-unit growth coefficient (TGC) was significantly lower in salmon fed diets with 0.50% and 1.00% purified lignin than those fed the control diet, while there was no significant difference between the other treatments and the control diet (P < 0.05). The feed efficiency (FE) was significantly lower in salmon fed diets with 0.50% and 1.00% purified lignin and 0.05% hemicellulose than those fed the control diet, while there was no significant difference between the other treatments and the control diet (P < 0.05). The hepatosomatic index (HSI), intestinal villus length, and apparent digestibility coefficient (ADC) of nutrients in diets were similar (P > 0.05) among all the diets. This study demonstrated that inclusions of up to 0.25% of dietary purified lignin alone, and 0.25%–0.50% of dietary hemicellulose alone or in combination with dietary lignin can be considered as candidate prebiotics in Atlantic salmon nutrition.